Preparation of Yb3+-doped silica fiber preform at low temperature

Baoluo Zheng; Jinhang Wang; Yu Liu; Pu Wang

doi:10.1117/12.2548808

12 March 2020 Preparation of Yb³⁺-doped silica fiber preform at low temperature

Baoluo Zheng, Jinhang Wang, Yu Liu, Pu Wang

Proceedings Volume 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications; 114370J (2020) https://doi.org/10.1117/12.2548808
Event: 2019 International Conference on Optical Instruments and Technology, 2019, Beijing, China

Abstract

We report a new method to prepare active silica fiber preform at low temperature, not exceeding 1300℃ through the whole process. We prefabricated glass parts with nano-porous structure by UV cure equipment and debinded, the average pore diameter is about 46 nm. To prepare the active fiber preform, several different concentrations of Yb³⁺ ions were impregnated with solution doping method and further sintering under flowed O₂. After several hours vitrification, the Yb³⁺- doped silica fiber preform with 0.05 wt%, 0.1 wt% and 0.2 wt% doping concentration were produced, and the size of the final fiber preform is φ3×39 mm. Then the fiber owning an Yb³⁺ concentration of 0.1 wt% was drawn by rod-in-tube, the measurements show that Yb³⁺ ions are homogeneous, central wavelength is 1030 nm, the 3 dB linewidth is about 38 nm, fluorescent lifetime is 1 ms, the fiber has absorption from Yb³⁺ 7 dB/m at 976 nm. To best of our knowledge, it is first time that active fiber preform is produced by this approach.

Citation Download Citation

Baoluo Zheng, Jinhang Wang, Yu Liu, and Pu Wang "Preparation of Yb³⁺-doped silica fiber preform at low temperature", Proc. SPIE 11437, 2019 International Conference on Optical Instruments and Technology: Advanced Laser Technology and Applications, 114370J (12 March 2020); https://doi.org/10.1117/12.2548808

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